地铁站全膜流板式蒸发冷却器设置位置分析
Installation location of intact film plate evaporative cooler in underground railway stations
摘要：
将板式换热器与蒸发冷却技术相结合，提出采用全膜流板式蒸发冷却器代替冷却塔，解决冷却塔难以设置的问题。对该设备在气液顺流、逆流、叉流条件下的传热性能进行模拟计算，结果表明，叉流条件下局部Nu最大，其次为顺流，逆流最小。通过对计算结果和安装运行的综合分析，提出地铁排风道水平段为全膜流板式蒸发冷却器的最佳设置方案，为该设备的实际应用提供了参考依据。
Abstract：
By applying plate heat exchanger and evaporative cooling technology, presents to substitute the intact film plate evaporative cooler for the cooling tower. Simulates the heat transfer performances of the device on conditions of concurrent flow, counter flow and cross flow. The results show a maximum local Nusselt number on cross flow condition, followed by concurrent flow, and a minimum on counter flow condition. By the comprehensive analysis of simulation results and installation and operation, recommends horizontal segment of extraction air duct in an underground railway station be the optimal location of installing the intact film plate evaporative cooler, providing reference for practical application.
Keywords:undergroundrailwaystation,evaporativecooling,fallingfilm,installationlocation